Push button type mechanical pencil



Oct. 17, 1950 R. F. PERRAUD 2,526,263

PUSH BUTTON TYPE MECHANICAL PENCIL Filed July 3, 1947 r T ,5 6 4 3 i Z; d 5 I *3 i Fig.5

Patented Oct. 17, 1950 UNITED STATES --()F-Fl C e PUSH BUTTON TYPE MECHANICAL PENCIL Roger Francois Perraud, Paris, France; assignorf 4 to Socit: A. J. Fagar'd a French company v & Cie, Paris France, r

' l -Applicatlon Juiy s,1947;' se1-iai11 io;.75s,738 1 In France April 15,1946

Section 1, Public Law 690, August s, 1946 P'atent'expires April 15, 1966 This invention relates to improvements in push button type mechanical pencil.

Chief object of the invention is the provision of an improved pencil in which the lead feeding mechanism is connected to a push-button constituting the body of the pencil clip, said clip being movable relatively to the pencil head and said head being stationary with respect to the pencil body.

In the accompanying drawings which are given solely by way of example.

Fig. 1 is an external-side view "of a pencil-in accordance with the invention; I L 1 Fig. 2 is a fragmentary front view, of the embodiment illustrated in Fig. 1;

Fig. 3 is a partial longitudinal sectional view on a larger scale taken along theline 33 of Fig. 2;

threaded portion of the body is extended by an ornamented ring.

The upper or rear end of the head 3 is, for

- example, of ogival shape, it is of solid structure and provided with a longitudinal incision 5 having parallel faces opening at the top and laterally of said head at one side. also into the cylindrical cavity of said head. The incision 5 extends preferably at 6 (Fig. 3) beyond the solid portion to the tubular portion of the head 3 where said incision opens laterally.

Lengthwise slidable within said incision 5, which allows a minute play, is a fiat metallic push-button I and. a clip 1 formed integrally with or secured'to said member. 7

The push-button 1 is provided on its edge 8 located in the bottom of the incision 5 with a tapped hole 9" for receiving a threaded pin I0; Said pin is integral with or fixed to the bottom of an inner tube II slidably mounted inside the head 3. Said tube II covers the usual tube I2 forming a lead-reservoir which controls the feed mechanism by means of its longitudinal displacements. Tube II bears against tube I2 through ashoulderl3.

As may be seen the connection between the Said incision opens along the 3 Claims. (01}. 120-11) tubes II and I2 is arranged so as not to impede the separation, through unscrewing at 2, of the body I, with its tube I2 and, on the other hand, of the whole head assembly with the devices above described.

The clip body or push-button 1 preferably has itsedge 8 provided with a slot I4 for engagement with the bottom of slot 6 of the head 3 upon completion of the displacement of push-button I and clip 1 towards the tip of the pencil, that is, in the direction of arrow ,f (Fig. 3) relatively to the head 3.

. Operation is as follows: 2 ,1 La.

Refilling of the lead-storage tubeis effected by unscrewing the head section 3. Upon restoring of said head in position, tube II will cap the storage-tube I2. Hence, to cause the lead to move forward, while holding the pencil in one hand, it is only necessary to exert pressure in the known manner not on the head 3 but on the push-button l projecting from said head. 'The towards the bottom I5 (Fig. 4) of the cylindrical cavity of the head section 3 and consequently the push-button I projecting from said head to its inoperative position.

It will be evident, that in duced with regard to, certain details of construc tion and shape of the instrument without departing from the scope Of the invention as clearly set forth in the appended claims.

Having now described my invention what I claim as new and desireto secure by Letters Patent is:

1. In a pencil with lead feeding mechanism, a

, tubular body open and threaded at its upper porl element and closing the upper end of said tubular element, a push-button rigidly secured on'said carrying the invention into practice, modifications may be'intro-.

3 bottom, a pocket-clip rigidly fixed on said pushbutton, and a tubular head section adapted to cap said tubular element and to be screwed on said threaded upper portion of said body, said head section being formed with an aperture adapted for the passage and reciprocation of said push-button and pocket-clip and with a shoulder to abut on said bottom, whereby said pocket-clip, rigidly connected with the bottom of said head section can reciprocate together with said tubular element and storage tube. 2. In a pencil with lead feeding mechanism, a

tubular body open and threaded at its upperportion, a lead storage tube open at its upper endand slidably mounted in said body, a tubular element whose lower end is rotatably and removably fitted in said upper end of said lead storage tube, said tubular element comprising a shoulder adapted to coact with the upper end of said lead storage tube, a bottom integral with said tubular element and closing the upper end of said tubular element, a push-button screwed on said bottom, a pocket-clip integral with said push-button, and a tubular head section adapted to cap said tubular element and to be screwed on said threaded upper portion of said body, said head section being formed with an aperture adapted for the passage and reciprocation of said push-button and pocket-clip and with a shoulder to abut on said'bottom, whereby said pocket-clip, rigidly connected with the bottom of said head section can reciprocate together with said tubular element and storage tube.

V 3. In a, pencil with lead feeding mechanism, a

4 tubular body open and threaded at its upper portion, a lead storage tube open at its upper end and slidably mounted in said body, a tubular elementwhose lower end is rotatably and removably fitted in said upper end offsaid lead storage tube, said tubular element comprising a shoulder adapted to coact with the upper end of said lead storage tube, a bottom integral with said tubular element and closing the upper end of said tubular element, a vertical flat push-button screwed by its lower edge on said bottom, a pocket clip integral with said flat push-button, projecting from the lateral edge of said push-button, and

a tubular head section adapted to cap said tubular element and to be screwed on said threaded 1 aEFEaENoEs CITED Th following references are of record in the file of this patent:

Num er Name Date 2,203,160 =Kovlacs June 4, 1940 

